'Unable to upgrade laravel framework from 5.5 to 5.6 or 5.7 on an existing project

I am trying to upgrade my laravel project framework to 5.7 from 5.5 but unable to do it ..

when i change composerjson requres as laravel upgrading documentation and hit composer update on project terminal its output me these:

composer update
Do not run Composer as root/super user! See https://getcomposer.org/root for details
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Conclusion: don't install laravel/framework v5.6.39
    - Conclusion: don't install laravel/framework v5.6.38
    - Conclusion: don't install laravel/framework v5.6.37
    - Conclusion: don't install laravel/framework v5.6.36
    - Conclusion: don't install laravel/framework v5.6.35
    - Conclusion: don't install laravel/framework v5.6.34
    - Conclusion: don't install laravel/framework v5.6.33
    - Conclusion: don't install laravel/framework v5.6.32
    - Conclusion: don't install laravel/framework v5.6.31
    - Conclusion: don't install laravel/framework v5.6.30
    - Conclusion: don't install laravel/framework v5.6.29
    - Conclusion: don't install laravel/framework v5.6.28
    - Conclusion: don't install laravel/framework v5.6.27
    - Conclusion: don't install laravel/framework v5.6.26
    - Conclusion: don't install laravel/framework v5.6.25
    - Conclusion: don't install laravel/framework v5.6.24
    - Conclusion: don't install laravel/framework v5.6.23
    - Conclusion: don't install laravel/framework v5.6.22
    - Conclusion: don't install laravel/framework v5.6.21
    - Conclusion: don't install laravel/framework v5.6.20
    - Conclusion: don't install laravel/framework v5.6.19
    - Conclusion: don't install laravel/framework v5.6.18
    - Conclusion: don't install laravel/framework v5.6.17
    - Conclusion: don't install laravel/framework v5.6.16
    - Conclusion: don't install laravel/framework v5.6.15
    - Conclusion: don't install laravel/framework v5.6.14
    - Conclusion: don't install laravel/framework v5.6.13
    - Conclusion: don't install laravel/framework v5.6.12
    - Conclusion: don't install laravel/framework v5.6.11
    - Conclusion: don't install laravel/framework v5.6.10
    - Conclusion: don't install laravel/framework v5.6.9
    - Conclusion: don't install laravel/framework v5.6.8
    - Conclusion: don't install laravel/framework v5.6.7
    - Conclusion: don't install laravel/framework v5.6.6
    - Conclusion: don't install laravel/framework v5.6.5
    - Conclusion: don't install laravel/framework v5.6.4
    - Conclusion: don't install laravel/framework v5.6.3
    - Conclusion: don't install laravel/framework v5.6.2
    - Conclusion: don't install laravel/framework v5.6.1
    - cartalyst/stripe-laravel v7.0.0 requires illuminate/support 5.5.* -> satisfiable by laravel/framework[v5.5.45], illuminate/support[v5.5.0, v5.5.16, v5.5.17, v5.5.2, v5.5.28, v5.5.33, v5.5.34, v5.5.35, v5.5.36, v5.5.37, v5.5.39, v5.5.40, v5.5.41, v5.5.43, v5.5.44].
    - cartalyst/stripe-laravel v7.0.0 requires illuminate/support 5.5.* -> satisfiable by laravel/framework[v5.5.45], illuminate/support[v5.5.0, v5.5.16, v5.5.17, v5.5.2, v5.5.28, v5.5.33, v5.5.34, v5.5.35, v5.5.36, v5.5.37, v5.5.39, v5.5.40, v5.5.41, v5.5.43, v5.5.44].
    - Can only install one of: laravel/framework[v5.6.0, v5.5.45].
    - don't install illuminate/support v5.5.0|don't install laravel/framework v5.6.0
    - don't install illuminate/support v5.5.16|don't install laravel/framework v5.6.0
    - don't install illuminate/support v5.5.17|don't install laravel/framework v5.6.0
    - don't install illuminate/support v5.5.2|don't install laravel/framework v5.6.0
    - don't install illuminate/support v5.5.28|don't install laravel/framework v5.6.0
    - don't install illuminate/support v5.5.33|don't install laravel/framework v5.6.0
    - don't install illuminate/support v5.5.34|don't install laravel/framework v5.6.0
    - don't install illuminate/support v5.5.35|don't install laravel/framework v5.6.0
    - don't install illuminate/support v5.5.36|don't install laravel/framework v5.6.0
    - don't install illuminate/support v5.5.37|don't install laravel/framework v5.6.0
    - don't install illuminate/support v5.5.39|don't install laravel/framework v5.6.0
    - don't install illuminate/support v5.5.40|don't install laravel/framework v5.6.0
    - don't install illuminate/support v5.5.41|don't install laravel/framework v5.6.0
    - don't install illuminate/support v5.5.43|don't install laravel/framework v5.6.0
    - don't install illuminate/support v5.5.44|don't install laravel/framework v5.6.0
    - Installation request for laravel/framework 5.6.* -> satisfiable by laravel/framework[v5.6.0, v5.6.1, v5.6.10, v5.6.11, v5.6.12, v5.6.13, v5.6.14, v5.6.15, v5.6.16, v5.6.17, v5.6.18, v5.6.19, v5.6.2, v5.6.20, v5.6.21, v5.6.22, v5.6.23, v5.6.24, v5.6.25, v5.6.26, v5.6.27, v5.6.28, v5.6.29, v5.6.3, v5.6.30, v5.6.31, v5.6.32, v5.6.33, v5.6.34, v5.6.35, v5.6.36, v5.6.37, v5.6.38, v5.6.39, v5.6.4, v5.6.5, v5.6.6, v5.6.7, v5.6.8, v5.6.9].
    - Installation request for cartalyst/stripe-laravel 7.0.* -> satisfiable by cartalyst/stripe-laravel[v7.0.0].

and this is my composer.json

{
    "name": "laravel/laravel",
    "description": "The Laravel Framework.",
    "keywords": ["framework", "laravel"],
    "license": "MIT",
    "type": "project",
    "require": {
        "php": "^7.1.3",
        "laravel/framework": "5.6.*",
        "cartalyst/stripe-laravel": "7.0.*",
        "spatie/laravel-activitylog": "^2.1.1",
        "yajra/laravel-datatables-oracle": "~8.0",
        "arcanedev/no-captcha": "^5.0"
    },
    "require-dev": {
        "filp/whoops": "~2.0",
        "fzaninotto/faker": "~1.4",
        "mockery/mockery": "0.9.*",
        "phpunit/phpunit": "~7.0",
        "barryvdh/laravel-debugbar": "^3.0"
    },
    "autoload": {
        "classmap": [
            "database"
        ],
        "psr-4": {
            "App\\": "app/",
            "App\\Helpers\\": "app/Helpers/"
        },
        "files": ["app/Helpers/functions.php"]
    },
    "autoload-dev": {
        "classmap": [
            "tests/TestCase.php"
        ]
    },
    "scripts": {
        "post-root-package-install": [
            "php -r \"file_exists('.env') || copy('.env.example', '.env');\""
        ],
        "post-create-project-cmd": [
            "php artisan key:generate"
        ],
        "post-install-cmd": [
            "Illuminate\\Foundation\\ComposerScripts::postInstall",
            "php artisan optimize"
        ],
        "post-update-cmd": [
            "Illuminate\\Foundation\\ComposerScripts::postUpdate",
            "php artisan optimize"
        ]
    },
    "config": {
        "preferred-install": "dist"
    }
}

tried many ways available on internet but still hanging on the problem

just want to upgrade the project laravel for new features ..

Anybody got any idea ? how can i solved this and go ahead with new laravel ?

thanks in advance.

Solution 1:^[1]

You have to install these packages first before run composer update, also change the version of laravel to 5.7 in your composer.json file.

Ubundu Terminal Command

sudo apt install php7.2 libapache2-mod-php7.2 php7.2-mbstring php7.2-xmlrpc php7.2-soap php7.2-gd php7.2-xml php7.2-cli php7.2-zip

PHP >= 7.1.3
Ctype PHP Extension
JSON PHP Extension
BCMath PHP Extension

Delete the vendor folder and try composer update

Solution 2:^[2]

it was because of this line

cartalyst/stripe-laravel v7.0.0 requires illuminate/support 5.5

thank you all for help...

i just update cartalyst packages and composer update its worked

conclusion : for update your laravel project remember to upgrade your 3rd party packages ..

Solution 3:^[3]

php -v

if below 7 , maybe you have alias like

php7 -v

php72 -v

many servers use php aliases

Solution 4:^[4]

just change the laravel to 5.7.* in composer.json file and run composer install command

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution	Source
Solution 1
Solution 2	ppegu
Solution 3	Tomasz ?wik
Solution 4	PHP Geek

'Unable to upgrade laravel framework from 5.5 to 5.6 or 5.7 on an existing project

Solution 1:[1]

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Sources

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